"He died because of a gunshot wound. It is obvious," the doctor said but they did not disclosed further details about whether it was from an apparent gunshot wound on the left side of Gaddafi's head.
"There are still several issues. We have to pass (the report) to the prosecutor general. But everything will be revealed publicly. Nothing will be hidden." said one of the doctor involved in the autopsy.
The autopsy was carried out at a morgue in the city of Misrata, about 200 km (130 miles) east of Tripoli. Local officials said Gaddafi's body would now be brought back to the cold store at an old market in Misrata where it has been on public display.
Bloody images of Gaddafi being taunted and beaten by his captors in his hometown of Sirte have raised questions about whether he was killed in crossfire, as clamied by the government. There is still much controversy over the circumstances surrounding his death.
Gaddafi had been one of the world's most mercurial leaders, dominating Libya with a regime that often seemed to run by his whims bringing international condemnation and isolation on his country for four years. The fall of Sirte and Gaddafi's death brought an end to a dictatorial period in Libya and the beginning of a new chapter for Libyan citizens.